Completion requirements
Inverse functions bring together the concepts we have learned about composite functions and domain and range, so make sure you are confident with those sections before you dig in. A function must be one-to-one to have an inverse. If you are uncertain how to determine whether a function is one-to-one, it may be a good idea to revisit that concept.
Lesson: Inverse Functions
Source:
Mathispower4u, https://youtu.be/q6y0ToEhT1E
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